Basic Fatliquors

Licrol FOS

basic fatliquor

Chemical composition

high quality sulphited fish oil

Active matter

approx. 85 %


brown transparent oil

pH - value (1:10)

6.0 - 8.0




highly stable to acids and salts under usual tannery conditions, stable in chrome liquors


combinations with other fatliquors have to be stirred thoroughly before dilution, dilution method: 1 : 3 with water of 50 °C – 60 °C

Field of application

High quality sulphited fish oil which is used for the chrome tanning, chrome retanning and in the main fatliquoring for soft garment and upholstery leather.



  • excellent softness
  • typical touch and softness of sulphited fish oils
  • only insignificant trend to yellowing
  • pleasant odour



    Licrol FOS can be added to the chrome tanning and retanning baths. The combination of Licrol FOS and Licrol SB 114 is very suitable for the upholstery crust. For garment leathers Licrol FOS should be used along with Licrol LEC and Licrol PP.

    Chrome tannage

    Licrol FOS

    0.5 % - 2.0 %

    Chrome retannage

    Licrol FOS

    0.5 % - 2.0 %

    Garment / Upholstery main fatliquoring

    Licrol FOS
    Licrol SB 114

    Licrol LEC

    2.0 % - 4.0 %
    6.0 % - 10.0 %

    2.0 % - 3.0 %


    Licrol FOS is a technical emulsion and variations in colour and viscosity can happen. The properties for application are not touched by this.

    Storage temperature

    Storage at temperatures between 5 °C and 40 °C.

    Shelf life

    Up to 6 months in the original sealed packing.


    Stir before use.

    This information and our technical advice - whether verbal, in writing or by way of trials - are given in good faith but without warranty, and this also applies where proprietary rights of third parties are involved. Our advice does not release you from the obligation to check its validity and to test our products as to their suitability for the intended processes and uses. The application, use and processing of our products and the products manufactured by you on the basis of our technical advice are beyond our control and, therefore, entirely your own responsibility. Our products are sold in accordance with our General Conditions of Sale and Delivery.

    Download Technical Data Sheet